Separate webackconfig for prod

package.json

@@ -5,7 +5,7 @@
   "main": "index.html",
   "scripts": {
     "lint": "eslint js/*.js js/*.jsx",
-    "build": "webpack --optimize-minimize",
+    "build": "webpack --config=webpack.production.config.js",
     "serve": "webpack-dev-server",
     "weight": "npm run build && gzip-size built/winamp.js | pretty-bytes",
     "test": "jest && npm run lint",

webpack.config.js

@@ -1,14 +1,6 @@
-var path = require('path');
-var webpack = require('webpack');
+const path = require('path');
 
 module.exports = {
-  plugins: [
-    new webpack.DefinePlugin({
-      'process.env': {
-        'NODE_ENV': JSON.stringify('production')
-      }
-    })
-  ],
   module: {
     loaders: [
       {

webpack.production.config.js

@@ -0,0 +1,13 @@
+const config = require('./webpack.config');
+const webpack = require('webpack');
+
+config.plugins = (config.plugins || []).concat([
+  new webpack.DefinePlugin({
+    'process.env': {
+      'NODE_ENV': JSON.stringify('production')
+    }
+  }),
+  new webpack.optimize.UglifyJsPlugin()
+]);
+
+module.exports = config;